Chaelbs bates



(No Model.)

(lBAYER.

. PIANO FORTE DAMPER ACTION.-

No. 354,618. Patented Dec. 21, 1886.

w. PETERS Phukwmhogrnphqr. Washington, 0, c.

UNITED STATES PATENT OFFICE.

CHARLES BAYER, OF NEW YORK, N. Y.

PIANO-FORTE DAMPER-ACTION.

SPECIFICATION forming part of Letters Patent No. 354,618, dated December21, 1886'.

Application filed September 16, 1886. Serial No. 213,714. (No model.)

To all whom it may concern: D

Be it known that 1, CHARLES BAYER, a citizen of the United States,residing at New York, in the county and State of New York, have inventeda new and Improved Piano Forte DamperActidn, of which the following is aspecification.

This invention relates to dampernctions for piano-fortes, and it moreespecially refers to bearings of dampercranks or lifting-bars.

This invention consists in the improvement hereinafter more fullyspecified.

In the accompanying drawings, Figure 1 represents a longitudinal view ofpart of a pianoi'orte main action-rail with the damper crank orlifting-bar attached. Fig. 2 is a section at line a a, Fig. 1, at anenlarged scale. Fig. 3 is a side view of the hearing at an enlargedscale. Fig. 4 is a top view of the same.

A is the main actionrail, made of wood of any approved form, and towhich description of rails my invention more particularly refers,although the same is equally applicable to any other description ofrails.

B is the damper-crank or lifting-bar applied to said rails, providedwith the usual liftingarm controlled by the treadle, (not shown in thedrawingsJand b b are the pivots on which said crank or bar turns. riedby bearings (l.

Each bearing 0, preferably cast of a circular form, as shown in thedrawings, is provided at its lower surface with a circular projection,d,

These pivots are carand at its face with a socket, e, to receive thethen fastened to the rail by screws a n. The end of the cloth bushes maybe lapped downward partly around the projection d to fill thecountersunk hole in the rail, and thus insure a perfectly-tight fit. Tofacilitate this, this projection d is placed on one side of the plate 0,directly underneath the socket 0. (See Figs. 3 and 4.) It will thus beobserved that the countersunk hole in the rail need not to fit veryclose the projection d, the plate 0, lying upon the surface of the rail,covering any irregularity.

I am aware that similar plates described in the patent of Vessel, Nichel, and Gross, No. 210,381, have been used; but in that arrangementthe main rail has to be gouged out for the lower part of the socket, andagain for clearance of the crank part of the bar, besides whichparticular care has to be taken in countersinking the hole into whichthe plate fits, and to trim the outside margin of said plate,-so thatthe same will fit the countersunk hole, while by my improved plate onlya hole has to be countersunk, andany irregularity will be covered by theplate, improving not only the appearance of the rail, but at the sametime saving considerable work and expense in fitting the same.

I claim- The combination of the main action rail A, and the damper-crankor lifting-bar B, having pivots b, with the plate bearings G, havingcircular projections d on the under side, and sockets e on its top orface surface, to receive suitable cloth bushes, and the pivot 12,substantially as described.

CHARLES BAYER. Witnesses:

B0131. H. BOY, ALFRED J ONGHMANS.

